/Engine/Source/Runtime/AudioMixer/Public/AudioMixerBlueprintLibrary.h
Replaces the submix effect at the given submix chain index, adds the effect if there is none at that index.
static void ReplaceSubmixEffect ( const [UObject](API\Runtime\CoreUObject\UObject\UObject) * WorldContextObject, [USoundSubmix](API\Runtime\Engine\Sound\USoundSubmix) * InSoundSubmix, int32 SubmixChainIndex, [USoundEffectSubmixPreset](API\Runtime\Engine\Sound\USoundEffectSubmixPreset) * SubmixEffectPreset )